Home / 42,938.70-64,408.05-19,246.20

Finding the Fourth Proportional to 42,938.70, 64,408.05 and 19,246.20

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Solution

The fourth proportional to 42,938.70, 64,408.05 and 19,246.20 is: 28,869.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,938.70 : 64,408.05 = 19,246.20 : x
  2. Step 2: Convert to fraction form
    42,938.70/64,408.05 = 19,246.20/x
  3. Step 3: Cross multiply
    42,938.70x = 64,408.05 × 19,246.20
  4. Step 4: Simplify right side
    42,938.70x = 1,239,610,211.91
  5. Step 5: Solve for x
    x = 1,239,610,211.91/42,938.70
  6. Step 6: Final answer
    x = 28,869.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.